Migrate setup.py to setup.cfg declarative metadata

Committed via https://github.com/asottile/all-repos

setup.cfg

+[metadata]
+name = add_trailing_comma
+version = 0.7.2
+description = Automatically add trailing commas to calls and literals
+long_description = file: README.md
+long_description_content_type = text/markdown
+url = https://github.com/asottile/add-trailing-comma
+author = Anthony Sottile
+author_email = asottile@umich.edu
+license = MIT
+license_file = LICENSE
+classifiers =
+    License :: OSI Approved :: MIT License
+    Programming Language :: Python :: 2
+    Programming Language :: Python :: 2.7
+    Programming Language :: Python :: 3
+    Programming Language :: Python :: 3.4
+    Programming Language :: Python :: 3.5
+    Programming Language :: Python :: 3.6
+    Programming Language :: Python :: 3.7
+    Programming Language :: Python :: Implementation :: CPython
+    Programming Language :: Python :: Implementation :: PyPy
+
+[options]
+py_modules = add_trailing_comma
+install_requires = tokenize-rt>=2.1
+python_requires = >=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*
+
+[options.entry_points]
+console_scripts =
+    add-trailing-comma = add_trailing_comma:main
+
 [bdist_wheel]
 universal = True

setup.py

 from setuptools import setup
-
-setup(
-    name='add_trailing_comma',
-    description='Automatically add trailing commas to calls and literals',
-    url='https://github.com/asottile/add-trailing-comma',
-    version='0.7.2',
-    author='Anthony Sottile',
-    author_email='asottile@umich.edu',
-    classifiers=[
-        'License :: OSI Approved :: MIT License',
-        'Programming Language :: Python :: 2',
-        'Programming Language :: Python :: 2.7',
-        'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.5',
-        'Programming Language :: Python :: 3.6',
-        'Programming Language :: Python :: Implementation :: CPython',
-        'Programming Language :: Python :: Implementation :: PyPy',
-    ],
-    install_requires=['tokenize-rt>=2.1'],
-    py_modules=['add_trailing_comma'],
-    entry_points={
-        'console_scripts': ['add-trailing-comma = add_trailing_comma:main'],
-    },
-)
+setup()